Index Nissan Nissan Pathfinder (2014 year) - Service and Repair Manual

Content .. 683 684 685 686 ..

Nissan Pathfinder. Manual - part 685

HAC-1

VENTILATION, HEATER & AIR CONDITIONER

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SECTION

HAC

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HAC

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CONTENTS

HEATER & AIR CONDITIONING CONTROL SYSTEM

AUTOMATIC AIR CONDITIONING

PRECAUTION ...............................................

PRECAUTIONS ...................................................

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................

Precautions For Refrigerant System Service ............

Precaution for Service Equipment .............................

PREPARATION ...........................................

PREPARATION ..................................................

Special Service Tool ...............................................

Commercial Service Tool ........................................

SYSTEM DESCRIPTION .............................

COMPONENT PARTS .......................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM ............................................................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Component Parts Location ...........................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Component Description ................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM ............................................................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Component Parts Location ...........................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Component Description ................................

SYSTEM .............................................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM ............................................................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : System Diagram ...........................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : System Description .......................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Intelligent Key Interlock Function ..................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Flow Control ............................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Inlet Control .............................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Outlet Control ..........................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Compressor Control ......................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Door Control ..................................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Temperature Control .....................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Fail-safe ........................................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM ............................................................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : System Diagram ...........................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : System Description .......................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Intelligent Key Interlock Function ..................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Flow Control ............................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Air Outlet Control ..........................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Door Control ..................................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Temperature Control .....................................

OPERATION .....................................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM ............................................................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Switch Name and Function ...........................

HAC-2

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM ...........................................................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Switch Name and Function ..........................

DIAGNOSIS SYSTEM (HVAC) ..........................

Description ..............................................................

CONSULT Function ................................................

ECU DIAGNOSIS INFORMATION ..............

A/C AUTO AMP. ................................................

Reference Value .....................................................

Fail-safe ..................................................................

DTC Index ..............................................................

ECM, IPDM E/R, BCM .......................................

List of ECU Reference ............................................

WIRING DIAGRAM .....................................

AUTOMATIC AIR CONDITIONING SYSTEM ...

Wiring Diagram .......................................................

BASIC INSPECTION ...................................

DIAGNOSIS AND REPAIR WORK FLOW ........

Work Flow ...............................................................

OPERATION INSPECTION ...............................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM ...........................................................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Work Procedure ...........................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM ...........................................................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Work Procedure ...........................................

SYSTEM SETTING ............................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM ...........................................................................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Temperature Setting Trimmer (Front) ..........

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Foot Position Setting Trimmer .....................

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Inlet Port Memory Function (FRE) ...............

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Inlet Port Memory Function (REC) ...............

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM ...........................................................................

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Temperature Setting Trimmer (Rear) ...........

DTC/CIRCUIT DIAGNOSIS .........................

U1000 CAN COMM CIRCUIT ............................

Description ..............................................................

DTC Logic ...............................................................

Diagnosis Procedure ...............................................

U1010 CONTROL UNIT (CAN) .........................

Description ..............................................................

DTC Logic ...............................................................

Diagnosis Procedure ...............................................

B2578, B2579 IN-VEHICLE SENSOR ..............

DTC Logic ...............................................................

Diagnosis Procedure ...............................................

Component Inspection ............................................

B257B, B257C AMBIENT SENSOR .................

DTC Logic ...............................................................

Diagnosis Procedure ...............................................

Component Inspection ............................................

B2581, B2582 INTAKE SENSOR .....................

DTC Logic ...............................................................

Diagnosis Procedure ...............................................

Component Inspection ............................................

B2630, B2631 SUNLOAD SENSOR .................

DTC Logic ...............................................................

Diagnosis Procedure ...............................................

Component Inspection ............................................

B2632, B2633 AIR MIX DOOR MOTOR
(DRIVER SIDE) ..................................................

DTC Logic ...............................................................

Diagnosis Procedure ...............................................

B2634, B2635 AIR MIX DOOR MOTOR (PAS-
SENGER SIDE) .................................................

DTC Logic ...............................................................

Diagnosis Procedure ...............................................

B2636, B2637, B2638, B2639, B2654 MODE
DOOR MOTOR (FRONT) ..................................

DTC Logic ...............................................................

Diagnosis Procedure ...............................................

B263D, B263E, B263F INTAKE DOOR MO-
TOR ...................................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

B2799, B279A AIR MIX DOOR MOTOR
(REAR) ..............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

B279B, B279C MODE DOOR MOTOR
(REAR) ..............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

B279D, B279E REAR SHUT-OFF DOOR MO-
TOR ...................................................................

DTC Logic .............................................................

HAC-3

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HAC

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Diagnosis Procedure .............................................

B2796, B2797, B2798 COMMUNICATION
ERROR .............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

B27B0 A/C AUTO AMP. ..................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

POWER SUPPLY AND GROUND CIRCUIT ....

A/C AUTO AMP. ......................................................

A/C AUTO AMP. : Diagnosis Procedure ...............

AIR MIX DOOR MOTOR (DRIVER SIDE) ...............

AIR MIX DOOR MOTOR (DRIVER SIDE) : Diag-
nosis Procedure ....................................................

AIR MIX DOOR MOTOR (PASSENGER SIDE) ......

AIR MIX DOOR MOTOR (PASSENGER SIDE) :
Diagnosis Procedure .............................................

AIR MIX DOOR MOTOR (REAR) ............................

AIR MIX DOOR MOTOR (REAR) : Diagnosis Pro-
cedure ...................................................................

MODE DOOR MOTOR (FRONT) .............................

MODE DOOR MOTOR (FRONT) : Diagnosis Pro-
cedure ...................................................................

MODE DOOR MOTOR (REAR) ...............................

MODE DOOR MOTOR (REAR) : Diagnosis Pro-
cedure ...................................................................

INTAKE DOOR MOTOR ..........................................

INTAKE DOOR MOTOR : Diagnosis Procedure ...

A/C SWITCH ASSEMBLY .......................................

A/C SWITCH ASSEMBLY : Component Function
Check ....................................................................

A/C SWITCH ASSEMBLY : Diagnosis Procedure ..

A/C DISPLAY UNIT .................................................

A/C DISPLAY UNIT : Diagnosis Procedure ..........

REAR SHUT-OFF DOOR MOTOR ..........................

REAR SHUT-OFF DOOR MOTOR : Diagnosis
Procedure ..............................................................

REAR A/C CONTROL .............................................

REAR A/C CONTROL : Diagnosis Procedure ......

A/C SWITCH ASSEMBLY SIGNAL CIRCUIT ..

Diagnosis Procedure .............................................

A/C DISPLAY ...................................................

Diagnosis Procedure .............................................

DOOR MOTOR .................................................

Diagnosis Procedure .............................................

DOOR MOTOR COMMUNICATION CIRCUIT ..

Diagnosis Procedure .............................................

FRONT BLOWER MOTOR .............................

Diagnosis Procedure .............................................

Component Inspection (Front Blower Motor) .........

Component Inspection (Front Blower Motor Re-
lay) .........................................................................

MAGNET CLUTCH .........................................

Component Function Check ..................................

Diagnosis Procedure .............................................

PTC HEATER RELAY .....................................

Description .............................................................

Component Function Check ..................................

Diagnosis Procedure .............................................

Component Inspection ...........................................

PTC HEATER ..................................................

Diagnosis Procedure .............................................

REAR BLOWER MOTOR ...............................

Diagnosis Procedure .............................................

Component Inspection (Rear Blower Motor) .........

Component Inspection (Rear Blower Motor Relay)

..

Component Inspection (Rear Blower Motor Resis-
tor) .........................................................................

SYMPTOM DIAGNOSIS ............................

FRONT AUTOMATIC AIR CONDITIONING
SYSTEM ..........................................................

Diagnosis Chart By Symptom ................................

REAR AUTOMATIC AIR CONDITIONING
SYSTEM ..........................................................

Diagnosis Chart By Symptom ................................

INSUFFICIENT COOLING ..............................

FRONT AIR CONDITIONER ....................................

FRONT AIR CONDITIONER : Description ............

FRONT AIR CONDITIONER : Diagnosis Proce-
dure .......................................................................

REAR AIR CONDITIONER ......................................

REAR AIR CONDITIONER : Description ..............

REAR AIR CONDITIONER : Diagnosis Procedure

..

INSUFFICIENT HEATING ...............................

FRONT AIR CONDITIONER ....................................

FRONT AIR CONDITIONER : Description ............

FRONT AIR CONDITIONER : Diagnosis Proce-
dure .......................................................................

REAR AIR CONDITIONER ......................................

REAR AIR CONDITIONER : Description ..............

REAR AIR CONDITIONER : Diagnosis Procedure

..

HAC-4

INTELLIGENT KEY INTERLOCK FUNCTION
DOES NOT OPERATE ....................................

Description .............................................................

Diagnosis Procedure .............................................

COMPRESSOR DOES NOT OPERATE .........

Description .............................................................

Diagnosis Procedure .............................................

REMOVAL AND INSTALLATION ..............

A/C ASSEMBLY SWITCH ...............................

Removal and Installation - Without Navigation ......

A/C AND AV SWITCH ASSEMBLY ................

Removal and Installation - With Navigation ...........

REAR AIR CONTROL .....................................

Removal and Installation .......................................

A/C AUTO AMP. ..............................................

Exploded View .......................................................

Removal and Installation .......................................

AMBIENT SENSOR .........................................

Removal and Installation .......................................

IN-VEHICLE SENSOR .....................................

Removal and Installation .......................................

SUNLOAD SENSOR .......................................

Removal and Installation .......................................

INTAKE SENSOR ............................................

Removal and Installation .......................................

REFRIGERANT PRESSURE SENSOR ...........

Removal and Installation .......................................

DOOR MOTOR .................................................

Exploded View ......................................................

MODE DOOR MOTOR ............................................

MODE DOOR MOTOR : Removal and Installation
- Mode Door Motor (Front) ....................................

MODE DOOR MOTOR : Removal and Installation
- Mode Door Motor (Rear) .....................................

AIR MIX DOOR MOTOR .........................................

AIR MIX DOOR MOTOR : Removal and Installa-
tion - Air Mix Door Motor (Driver Side) ..................

AIR MIX DOOR MOTOR : Removal and Installa-
tion - Air Mix Door Motor (Passenger Side) ..........

AIR MIX DOOR MOTOR : Removal and Installa-
tion - Air Mix Door Motor (Rear) ............................

INTAKE DOOR MOTOR .........................................

INTAKE DOOR MOTOR : Removal and Installa-
tion ........................................................................

REAR SHUT-OFF DOOR MOTOR .........................

REAR SHUT-OFF DOOR MOTOR : Removal and
Installation .............................................................

BLOWER MOTOR RESISTOR ........................

Removal and Installation - Rear Blower Motor Re-
sistor 1 ..................................................................

Removal and Installation - Rear Blower Motor Re-
sistor 2 ..................................................................

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